the photo should have been taken at a more narrow angle, and at level with the two guys "standing" on the edge... regardless of how you tilts and turn the image as it is now.. it still looks like it's been taken while looking down onto the three while they're laying on the sidewalk

....That wouldn't even require that tall a building. It would just require it to be late/earlier in the day. Plus, my comment was just to say how this could still look real even without a narrower angle, thus the response to the anon above. Finally, I realize this picture was taken on a sidewalk. I am reasonably sure everyone is.